【PostgreSQL使用教程】PostgreSQL 中的 large object
【PostgreSQL使用教程】PostgreSQL 中的 large object
所有的大对象全部拆成 LOBLKSIZE 大小,放入 pg_largeobject 之中,通过 loid进行区分, 每个大对象拆分成的各个部分通过 pageno(叫元组序号更合理),进行顺序的关联起来,
pageno是通过 要写入的数据offset / LOBLKSIZE 计算的
pg的大对象实现的比较简单,并不适合大数据量的使用,会成为系统的瓶颈.
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